1 files changed, 85 insertions, 36 deletions

diff --git a/arch/sparc/kernel/smp_32.c b/arch/sparc/kernel/smp_32.c
index 91c10fb70858..21b125341bf7 100644
--- a/arch/sparc/kernel/smp_32.c
+++ b/arch/sparc/kernel/smp_32.c
@@ -37,8 +37,6 @@
 #include "irq.h"
 
 volatile unsigned long cpu_callin_map[NR_CPUS] __cpuinitdata = {0,};
-unsigned char boot_cpu_id = 0;
-unsigned char boot_cpu_id4 = 0; /* boot_cpu_id << 2 */
 
 cpumask_t smp_commenced_mask = CPU_MASK_NONE;
 
@@ -53,6 +51,7 @@ cpumask_t smp_commenced_mask = CPU_MASK_NONE;
 void __cpuinit smp_store_cpu_info(int id)
 {
         int cpu_node;
+        int mid;
 
         cpu_data(id).udelay_val = loops_per_jiffy;
 
@@ -60,10 +59,13 @@ void __cpuinit smp_store_cpu_info(int id)
         cpu_data(id).clock_tick = prom_getintdefault(cpu_node,
                                                      "clock-frequency", 0);
         cpu_data(id).prom_node = cpu_node;
-        cpu_data(id).mid = cpu_get_hwmid(cpu_node);
+        mid = cpu_get_hwmid(cpu_node);
 
-        if (cpu_data(id).mid < 0)
-                panic("No MID found for CPU%d at node 0x%08d", id, cpu_node);
+        if (mid < 0) {
+                printk(KERN_NOTICE "No MID found for CPU%d at node 0x%08d", id, cpu_node);
+                mid = 0;
+        }
+        cpu_data(id).mid = mid;
 }
 
 void __init smp_cpus_done(unsigned int max_cpus)
@@ -112,7 +114,7 @@ void __init smp_cpus_done(unsigned int max_cpus)
                 printk("UNKNOWN!\n");
                 BUG();
                 break;
-        };
+        }
 }
 
 void cpu_panic(void)
@@ -125,13 +127,58 @@ struct linux_prom_registers smp_penguin_ctable __cpuinitdata = { 0 };
 
 void smp_send_reschedule(int cpu)
 {
-        /* See sparc64 */
+        /*
+         * CPU model dependent way of implementing IPI generation targeting
+         * a single CPU. The trap handler needs only to do trap entry/return
+         * to call schedule.
+         */
+        BTFIXUP_CALL(smp_ipi_resched)(cpu);
 }
 
 void smp_send_stop(void)
 {
 }
 
+void arch_send_call_function_single_ipi(int cpu)
+{
+        /* trigger one IPI single call on one CPU */
+        BTFIXUP_CALL(smp_ipi_single)(cpu);
+}
+
+void arch_send_call_function_ipi_mask(const struct cpumask *mask)
+{
+        int cpu;
+
+        /* trigger IPI mask call on each CPU */
+        for_each_cpu(cpu, mask)
+                BTFIXUP_CALL(smp_ipi_mask_one)(cpu);
+}
+
+void smp_resched_interrupt(void)
+{
+        irq_enter();
+        scheduler_ipi();
+        local_cpu_data().irq_resched_count++;
+        irq_exit();
+        /* re-schedule routine called by interrupt return code. */
+}
+
+void smp_call_function_single_interrupt(void)
+{
+        irq_enter();
+        generic_smp_call_function_single_interrupt();
+        local_cpu_data().irq_call_count++;
+        irq_exit();
+}
+
+void smp_call_function_interrupt(void)
+{
+        irq_enter();
+        generic_smp_call_function_interrupt();
+        local_cpu_data().irq_call_count++;
+        irq_exit();
+}
+
 void smp_flush_cache_all(void)
 {
         xc0((smpfunc_t) BTFIXUP_CALL(local_flush_cache_all));
@@ -147,9 +194,10 @@ void smp_flush_tlb_all(void)
 void smp_flush_cache_mm(struct mm_struct *mm)
 {
         if(mm->context != NO_CONTEXT) {
-                cpumask_t cpu_mask = *mm_cpumask(mm);
-                cpu_clear(smp_processor_id(), cpu_mask);
-                if (!cpus_empty(cpu_mask))
+                cpumask_t cpu_mask;
+                cpumask_copy(&cpu_mask, mm_cpumask(mm));
+                cpumask_clear_cpu(smp_processor_id(), &cpu_mask);
+                if (!cpumask_empty(&cpu_mask))
                         xc1((smpfunc_t) BTFIXUP_CALL(local_flush_cache_mm), (unsigned long) mm);
                 local_flush_cache_mm(mm);
         }
@@ -158,9 +206,10 @@ void smp_flush_cache_mm(struct mm_struct *mm)
 void smp_flush_tlb_mm(struct mm_struct *mm)
 {
         if(mm->context != NO_CONTEXT) {
-                cpumask_t cpu_mask = *mm_cpumask(mm);
-                cpu_clear(smp_processor_id(), cpu_mask);
-                if (!cpus_empty(cpu_mask)) {
+                cpumask_t cpu_mask;
+                cpumask_copy(&cpu_mask, mm_cpumask(mm));
+                cpumask_clear_cpu(smp_processor_id(), &cpu_mask);
+                if (!cpumask_empty(&cpu_mask)) {
                         xc1((smpfunc_t) BTFIXUP_CALL(local_flush_tlb_mm), (unsigned long) mm);
                         if(atomic_read(&mm->mm_users) == 1 && current->active_mm == mm)
                                 cpumask_copy(mm_cpumask(mm),
@@ -176,9 +225,10 @@ void smp_flush_cache_range(struct vm_area_struct *vma, unsigned long start,
         struct mm_struct *mm = vma->vm_mm;
 
         if (mm->context != NO_CONTEXT) {
-                cpumask_t cpu_mask = *mm_cpumask(mm);
-                cpu_clear(smp_processor_id(), cpu_mask);
-                if (!cpus_empty(cpu_mask))
+                cpumask_t cpu_mask;
+                cpumask_copy(&cpu_mask, mm_cpumask(mm));
+                cpumask_clear_cpu(smp_processor_id(), &cpu_mask);
+                if (!cpumask_empty(&cpu_mask))
                         xc3((smpfunc_t) BTFIXUP_CALL(local_flush_cache_range), (unsigned long) vma, start, end);
                 local_flush_cache_range(vma, start, end);
         }
@@ -190,9 +240,10 @@ void smp_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
         struct mm_struct *mm = vma->vm_mm;
 
         if (mm->context != NO_CONTEXT) {
-                cpumask_t cpu_mask = *mm_cpumask(mm);
-                cpu_clear(smp_processor_id(), cpu_mask);
-                if (!cpus_empty(cpu_mask))
+                cpumask_t cpu_mask;
+                cpumask_copy(&cpu_mask, mm_cpumask(mm));
+                cpumask_clear_cpu(smp_processor_id(), &cpu_mask);
+                if (!cpumask_empty(&cpu_mask))
                         xc3((smpfunc_t) BTFIXUP_CALL(local_flush_tlb_range), (unsigned long) vma, start, end);
                 local_flush_tlb_range(vma, start, end);
         }
@@ -203,9 +254,10 @@ void smp_flush_cache_page(struct vm_area_struct *vma, unsigned long page)
         struct mm_struct *mm = vma->vm_mm;
 
         if(mm->context != NO_CONTEXT) {
-                cpumask_t cpu_mask = *mm_cpumask(mm);
-                cpu_clear(smp_processor_id(), cpu_mask);
-                if (!cpus_empty(cpu_mask))
+                cpumask_t cpu_mask;
+                cpumask_copy(&cpu_mask, mm_cpumask(mm));
+                cpumask_clear_cpu(smp_processor_id(), &cpu_mask);
+                if (!cpumask_empty(&cpu_mask))
                         xc2((smpfunc_t) BTFIXUP_CALL(local_flush_cache_page), (unsigned long) vma, page);
                 local_flush_cache_page(vma, page);
         }
@@ -216,19 +268,15 @@ void smp_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
         struct mm_struct *mm = vma->vm_mm;
 
         if(mm->context != NO_CONTEXT) {
-                cpumask_t cpu_mask = *mm_cpumask(mm);
-                cpu_clear(smp_processor_id(), cpu_mask);
-                if (!cpus_empty(cpu_mask))
+                cpumask_t cpu_mask;
+                cpumask_copy(&cpu_mask, mm_cpumask(mm));
+                cpumask_clear_cpu(smp_processor_id(), &cpu_mask);
+                if (!cpumask_empty(&cpu_mask))
                         xc2((smpfunc_t) BTFIXUP_CALL(local_flush_tlb_page), (unsigned long) vma, page);
                 local_flush_tlb_page(vma, page);
         }
 }
 
-void smp_reschedule_irq(void)
-{
-        set_need_resched();
-}
-
 void smp_flush_page_to_ram(unsigned long page)
 {
         /* Current theory is that those who call this are the one's
@@ -245,9 +293,10 @@ void smp_flush_page_to_ram(unsigned long page)
 
 void smp_flush_sig_insns(struct mm_struct *mm, unsigned long insn_addr)
 {
-        cpumask_t cpu_mask = *mm_cpumask(mm);
-        cpu_clear(smp_processor_id(), cpu_mask);
-        if (!cpus_empty(cpu_mask))
+        cpumask_t cpu_mask;
+        cpumask_copy(&cpu_mask, mm_cpumask(mm));
+        cpumask_clear_cpu(smp_processor_id(), &cpu_mask);
+        if (!cpumask_empty(&cpu_mask))
                 xc2((smpfunc_t) BTFIXUP_CALL(local_flush_sig_insns), (unsigned long) mm, insn_addr);
         local_flush_sig_insns(mm, insn_addr);
 }
@@ -325,7 +374,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
                 printk("UNKNOWN!\n");
                 BUG();
                 break;
-        };
+        }
 }
 
 /* Set this up early so that things like the scheduler can init
@@ -398,10 +447,10 @@ int __cpuinit __cpu_up(unsigned int cpu)
                 printk("UNKNOWN!\n");
                 BUG();
                 break;
-        };
+        }
 
         if (!ret) {
-                cpu_set(cpu, smp_commenced_mask);
+                cpumask_set_cpu(cpu, &smp_commenced_mask);
                 while (!cpu_online(cpu))
                         mb();
         }